TIETwainParams.IterateParams

Declaration

function IterateParams(Dest: TStrings; SkipUnavailable: Boolean = False; Capability: Integer = -1): boolean;

Description

Outputs properties of the current scanner to a string.
Specify a Capability, or -1 to output all properties.
If SkipUnavailable is true, then any capabilities not supported by the scanner are not output to the log.
Returns False if cannot connect to the scanner.

Demo

Demos\ImageAcquisition\TwainStore\TwainStore.dpr

Example Output

// Display all properties for a scanner
if ImageEnView1.IO.SelectAcquireSource([ieaTwain]) then
  ImageEnView1.IO.TwainParams.IterateParams( memLog.Lines, chkHideUnavailable.Checked, -1 );

Cap_XferCount: 65535
Cap_Author: Unavailable
Cap_Caption: Unavailable
Cap_FeederEnabled: True
Cap_FeederLoaded: True
Cap_TimeDate: Unavailable
Cap_SupportedCaps: Cap_DeviceOnline, Cap_Indicators, Cap_EnableDSUIOnly, Cap_PaperDetectAble, Cap_FeederEnabled, Cap_FeederLoaded, Cap_Duplex, Cap_DuplexEnabled, Cap_AutoFeed, Cap_SupportedCaps, Cap_UIControllable, Cap_XferCount, Icap_BitDepth, Icap_BitOrder, Icap_Compression, Icap_Frames, Icap_MaxFrames, Icap_ImageFileFormat, Icap_PhysicalHeight, Icap_PhysicalWidth, Icap_PixelFlavor, Icap_PixelType, Icap_PlanarChunky, Icap_SupportedSizes, Icap_Orientation, Icap_Units, Icap_XferMech, Icap_XResolution, Icap_YResolution, Icap_Threshold, Icap_Contrast, Icap_Brightness, Icap_Gamma
Cap_ExtendedCaps: Unavailable
Cap_AutoFeed: True
Icap_Compression: 0
Icap_PixelType: 2 (0, 1, 2)
Icap_Units: 0, 5, 1, 2, 3, 4
Icap_XferMech: 1, 2, 0
Icap_AutoBright: Unavailable
Icap_Brightness: -1,000 - 1,000
Icap_Contrast: -1,000 - 1,000
Icap_ImageFileFormat: 2 (2, 0)
Icap_Orientation: 0
Icap_PhysicalWidth: 8.5
Icap_XResolution: 200 (50, 100, 150, 200, 300, 400, 500, 600)
Icap_YResolution: 200 (50, 100, 150, 200, 300, 400, 500, 600)
Icap_MaxFrames: 1
Icap_Tiles: Unavailable

Example Output 2

// Display the supported capabilities of the current scanner
ImageEnView1.IO.TwainParams.IterateParams( memLog.Lines, False, Cap_SupportedCaps );

Cap_DeviceOnline, Cap_Indicators, Cap_EnableDSUIOnly, Cap_PaperDetectAble, Cap_FeederEnabled, Cap_FeederLoaded, Cap_Duplex, Cap_DuplexEnabled, Cap_AutoFeed, Cap_SupportedCaps, Cap_UIControllable, Cap_XferCount, Icap_BitDepth, Icap_BitOrder, Icap_Compression, Icap_Frames, Icap_MaxFrames, Icap_ImageFileFormat, Icap_PhysicalHeight, Icap_PhysicalWidth, Icap_PixelFlavor, Icap_PixelType, Icap_PlanarChunky, Icap_SupportedSizes, Icap_Orientation, Icap_Units, Icap_XferMech, Icap_XResolution, Icap_YResolution, Icap_Threshold, Icap_Contrast, Icap_Brightness, Icap_Gamma, Cap_CustomInterfaceGUID, $8001, $8002, Cap_CustomDSData

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